I, too, used to struggle with intrusive thoughts, and still do. When I was about 13 - 14, an offensive word or phrase would pop into my head for no reason at all, and I would worry that I would blurt it out and make everyone mad....that never actually happened, but I still fretted about it, and still do at age 20, to some extent.
I have considered the possibility of my having some OCD (in fact, when I take other quirks of mine into account, I'm sure I have some) but always ended up discounting it bcuz I don't do the handwashing and the checking several times to make sure I've locked my door, etc. But I do think I have some intrusive thoughts that started in my early teens.
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I wish Sterling Holloway narrated my life.
"IT'S NOT FAIR!" "Life isn't fair, Calvin." "I know, but why isn't it ever unfair in MY favor?" ~ from Calvin and Hobbes